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authorIra W. Snyder <iws@ovro.caltech.edu>2012-07-19 19:54:18 +0400
committerMarc Kleine-Budde <mkl@pengutronix.de>2012-07-20 19:49:03 +0400
commit88b587039c1ad4e7a981bea3269eeb02a1a2a14b (patch)
tree54a97a0157e7f8330c8625f5527ffcb11bfcae64 /drivers/net/can/janz-ican3.c
parent9e4d6909a273ada78cf48379e478855bc13ae0cb (diff)
downloadlinux-88b587039c1ad4e7a981bea3269eeb02a1a2a14b.tar.xz
can: janz-ican3: fix error and byte counters
The error and byte counter statistics were being incremented incorrectly. For example, a TX error would be counted both in tx_errors and rx_errors. This corrects the problem so that tx_errors and rx_errors are only incremented for errors caused by packets sent to the bus. Error packets generated by the driver are not counted. The byte counters are only increased for packets which are actually transmitted or received from the bus. Error packets generated by the driver are not counted. Signed-off-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/janz-ican3.c')
-rw-r--r--drivers/net/can/janz-ican3.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c
index b19aca591c7a..4a5a8fb53a2f 100644
--- a/drivers/net/can/janz-ican3.c
+++ b/drivers/net/can/janz-ican3.c
@@ -907,8 +907,8 @@ static void ican3_handle_msglost(struct ican3_dev *mod, struct ican3_msg *msg)
if (skb) {
cf->can_id |= CAN_ERR_CRTL;
cf->data[1] = CAN_ERR_CRTL_RX_OVERFLOW;
+ stats->rx_over_errors++;
stats->rx_errors++;
- stats->rx_bytes += cf->can_dlc;
netif_rx(skb);
}
}
@@ -982,7 +982,6 @@ static int ican3_handle_cevtind(struct ican3_dev *mod, struct ican3_msg *msg)
dev_dbg(mod->dev, "bus error interrupt\n");
mod->can.can_stats.bus_error++;
- stats->rx_errors++;
cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
switch (ecc & ECC_MASK) {
@@ -1001,8 +1000,12 @@ static int ican3_handle_cevtind(struct ican3_dev *mod, struct ican3_msg *msg)
break;
}
- if ((ecc & ECC_DIR) == 0)
+ if (!(ecc & ECC_DIR)) {
cf->data[2] |= CAN_ERR_PROT_TX;
+ stats->tx_errors++;
+ } else {
+ stats->rx_errors++;
+ }
cf->data[6] = txerr;
cf->data[7] = rxerr;
@@ -1028,8 +1031,6 @@ static int ican3_handle_cevtind(struct ican3_dev *mod, struct ican3_msg *msg)
}
mod->can.state = state;
- stats->rx_errors++;
- stats->rx_bytes += cf->can_dlc;
netif_rx(skb);
return 0;
}